It turns out that one of the Grand Old Party’s biggest—and least discussed—challenges going into 2016 is lying in plain sight, written right into the party’s own nickname. The Republican Party voter is old—and getting older, and as the adage goes, there are two certainties in life: Death and taxes. Right now, both are enemies of the GOP and they might want to worry more about the former than the latter.

There’s been much written about how millennials are becoming a reliable voting bloc for Democrats, but there’s been much less attention paid to one of the biggest get-out-the-vote challenges for the Republican Party heading into the next presidential election: Hundreds of thousands of their traditional core supporters won’t be able to turn out to vote at all.
The party’s core is dying off by the day.

Since the average Republican is significantly older than the average Democrat, far more Republicans than Democrats have died since the 2012 elections. To make matters worse, the GOP is attracting fewer first-time voters. Unless the party is able to make inroads with new voters, or discover a fountain of youth, the GOP’s slow demographic slide will continue election to election. Actuarial tables make that part clear, but just how much of a problem for the GOP is this?

Since it appears that no political data geek keeps track of voters who die between elections, I took it upon myself to do some basic math. And that quick back-of-the-napkin math shows that the trend could have a real effect in certain states, and make a battleground states like Florida and Ohio even harder for the Republican Party to capture.

By combining presidential election exit polls with mortality rates per age group from the U.S. Census Bureau, I calculated that, of the 61 million who voted for Mitt Romney in 2012, about 2.75 million will be dead by the 2016 election. President Barack Obama’s voters, of course, will have died too—about 2.3 million of the 66 million who voted for the president won’t make it to 2016 either. That leaves a big gap in between, a difference of roughly 453,000 in favor of the Democrats

http://www.politico.com/magazine/story/2015/05/the-gop-is-dying-off-literally-118035.html#ixzz3aVWphGfi